i used to have tmobile for 6 years, had lots of signal issues, then moved to at&t with 2 yrs contract. it was even worse, a real nightmare. then i switched back to tmobile. now they have improve a lot.I am happy with their service. plus they have 49.99 talk unlimited with no contract option(real deal). tmobile customer service is very good where as at&t doesn't even have 24 hrs customer support available.